Feeding device for textile machines



March 14, 1939- A. LEWIS ET AL 2,150,882

FEEDING DEVICE FOR TEXTILE MACHINES Filed June 20, 1938 2 Sheets-Sheet 1 March 14, 1939. A. L. LEWIS ET AL 2,150,882

FEEDING DEVICE FOR TEXTILE MACHINES Filed June 20, 1958 2 Sheets-Sheet 2 Fig.4

Patented Mar. 14, 1939 UNITED STATES PATENT OFFICE FEEDING DEVICE FOR TEXTILE MACHINES Application June 20, 1938, Serial No. 214,736

10 Claims.

This invention relates to yarn feeding mechanism and particularly to such feeding means applicable to a doubling and twisting machine for silk, rayon, etc.

An object of the invention is to provide a positive feed for the strands being doubled and twisted, the strands being tightly engaged between portions of the flanges of feed wheels constantly rotating during operation upon axes at a slight angle to each other.

Another object of importance is to provide rotating means for a pair of opposed feed wheels resiliently maintained in oblique relationship to each other so that strands passing around the Wheels are tightly clamped between portions thereof while they are being advanced.

A feature of the invention that is advantageous is that one of the feed wheels or disks is positively rotated upon a fixed axis during operation and the companion or opposed wheel or disk is rotated from the first wheel or disk upon a fixed axis slightly oblique to the axis of rotation of the first wheel.

And another feature of the invention is that resilient means may be employed to hold a portion of the peripheries of the wheels or disks firmly together so that the strands passing around the wheels, at a portion of the periphery of the wheels, are held firmly between the wheels and positively fed in accordance with the rotative speed of the wheels.

With the above and other objects in View the invention includes the features of construction and operation set forth in the following specification and illustrated in the accompanying drawmgs.

In the accompanying drawings annexed hereto and forming a part of this specification, I have shown the invention embodied in a standard type 40 of textile twisting machine but it will be understood that the invention can be otherwise embodied and that the drawings are not to be construed as defining or limiting the scope of the. invention, the claims appended to this specification being relied upon for that purpose.

In the drawings:

Fig. 1 is a side elevation of a portion of a textile twisting or doubling and twisting machine showing yarn feeding mechanism forming one embcdiment of the present invention.

Fig. 2 is a front elevation in section of the feed mechanism shown in Fig. 1.

Fig. 3 is a view similar to Fig. 1 showing a modified form of the feed mechanism.

Fig. 4 is substantially a plan view in section taken upon the line l4 in Fig. 5 of the feed mechanism shown in Fig. 3.

Fig. 5 is a side elevation of one of the feed Wheels shown in Figs. 3 and 4.

Fig. 6 is a transverse sectional View of the feeding wheels shown in Figs. 4 and 5 the View being taken on the line 66 of Fig. 5, and

Fig. '7 is a plan View in section of another embodiment of the invention.

In the above mentioned drawings there have been shown several embodiments of the invention which are now deemed preferable, but it is tobe understood that changes and modifications may be made within the scope of the appended claims without departing from the spirit of the inventic-n.

Briefly, and in its preferred aspect, the invention may include the following principal parts: first, a positively rotated Wheel over which the strands being operated on pass from the take-off spools to the twisting or other operative part of the machine; second, a wheel or disk adjacent the first wheel preferably rotated therefrom and mounted for rotation upon an axis oblique to the axis of rotation of the first wheel; third, means to press the two wheels or disks firmly toward each other at one portion of their periphery, and fourth, a groove extending about the periphery of the two Wheels or disks within which the strands being twisted may lie during the rotation of the wheels and be tightly wedged between them at a portion of their periphery.

Referring more in detail to the figures the embodiment shown in Figs. 1 and 2 will first be described. In mesh with a driving gear ID on a shaft I l extending longitudinally of the machine is a gear l2 mounted on a sleeve 13 rotatable upon suitable bearings M on a fixed stud IS. The stud l5 may be mounted within the housing I 6 for the feed mechanism and secured inv fixed position therein by means of a set screw H or other fastening means. The housing It and its mounting on the vertical rod 18 as well as the shaft II and driving gears l0 and 12 for the sleeve l3 form no part of the present invention and may be of any standard construction and may operate in the usual manner.

At the outer end of sleeve I3 is mounted a thin disk 20 preferably of metal secured to the sleeve !3 in any desired manner so that it will rotate with the sleeve l3 and gear 12. Adjacent the disk 20 is a second disk 2| similar to disk 20 and having substantially the same diameter. The disk 2| is secured firmly upon a short stud 22 extending into and rotatable within the stud l5 at a slight angle to the axis thereof. Extending around the peripheries of disks and 2| is a flexible and resilient'member 23 preferably rubber and of gen- 'erallyring fonn'having a central peripheral depression 24" within which the strands being twisted may lie.

Due to-the obliquity of the axes upon which disks 20 and 2| are mounted and rotate; the depression 24 within which the strands lie and advance with the rotation of the disks at one portion of its circumference is substantially closed. In this portion of the peripheries the strands being twisted or spun are grasped or pinched tightly between the side walls of the groove '24 so that they will be forced to advance with rotation of the disks 20 and 2|. Preferably the axis upon which disk 2| rotates causes the disks sleeve.

to grasp the strands during rotation between the limits of the curved arrow shown in Fig. 1, the grove 24 being open materially at those portions where the strands enter and leave the disks so that the strands are, properly guided therein. In thisway successive portions of the strands during their feeding movement are continually being grasped by the closely adjacent portions of the resilient material 23 as they reach the disks.

The strands are therefore constrained to positively advance with the rotation of the disks 20 and 2|. The strands'leadon to and leave the disk at portions of the circumference. where the groove 24 is sufllciently wide to permit'them to enter and leave easily. By securing the stud |5 in-the housing It in different angular or rotating positions the groove 24. may have its open and closed portions. disposed wherever desired. I

r In the embodiment of the invention'shown in Figs. 3, 4,.5 and 6 the sleeve 25 corresponding to sleevel3 and driven by'gear 26 in the same man-, her as gear I2 has a moulded or other form of disk 21 at its outer end. Preferably the disk 21 may be directly moulded upon the sleeve 25 so that the disk will bev positively rotated with the As shown in Fig. 4the sleeve 25 rotates upon a bearing 28 mounted upon a fixed. stud 29 spindle 33.

in the housing 30. To retain the sleeve 25 and bearing 28 in position upon the stud 29 adisk or flange 3| may be riveted on the endof ,stud 29 its outer diameter being large enough to engage against the end of sleeve 25.

Adjacent disk 21 is a companion disk 32 preferably moulded directly upon a short shaft or Spindle 33 extends within and rotates within the stud 29 at a slight angle to the axis of stud 29 so that the disks 21 and 32 lie 2 adjacent but oblique to each other as shown in Fig. 4. To hold the 'di'sks21 and 32. in driving relation to each other bolts 34 may bedisposed between aligned openings in the two disks. These bolts are provided with flanges 35 bent asshown is formed extending about the peripheries of these disks. Strands being operated on are guided into the groove by the bevelled portions 36. Due to the oblique relationship between the axes of the two disks a portion of the grooveis closed and the other portions are open. In the closed portion of the groove the strands are clamped between the adjacent'surfaces of the disks so that the strands are positively driven by the disks. The depth of the groove is determined by the projections 31 formed on the disks 21 and 32. Preferably and as shown the periphery of the disks 21 and 32 is provided with deep transverse notches 39 extending to below the outer diameter. of the projections. -These notches are aligned relative to each'other and provide a transverse notch enabling strands that may become wrapped around the disks to be out. In, the embodiment, of therinvention shown'in Fig. 7 a disk 40 rotatable with'a sleeve 4| and gear 42 is provided with a bevelled flange 43 and a narrow rim having a cylindrical surface 44.

Adjacent this desk 40 is a companion disk 45' A'pin 41 fastened in disk V within a housing 49 as in the previously. de-

scribed embodiments. At the outer end of the stud 4.8'is an'arm 50 fixed to the shaft 48 and extending radially therefrom. On the outer end of arm 50. is a roller 5| preferably of conical form bearing against the slightly bevelled outer side surface of the disk 45. By means of this roller 5| the disks 40 and 45, at the portions of their peripheries adjacent the roller 5|, are held closely together. The flange 46 engages closely against the bevelled flange 43 so that strands (not shown) extending around the disks are tightly clamped and forced positively to advance with rotation of the disks. To aid in spreading the disks 4!! and 45 in portions away from the roller 5| a slitted and bent as shown may be placed between the disks and on the shaft 48 In operation the strands operated on enter the groove formed at the periphery of the disksf40 and 45 where the disks are spaced slightly apart to form an open groove. A portion of this groove will be tightly closed, as indicated at the lower portion of Fig. 7 adjacent the roller 5| so that thestrands will be positively advanced by rotation of the disks. By positioning the arm 5| at theproper angle the position where the strands are clamped within the groove between the disks 40 and 45 may be adjusted to any position.

We claim:

prising in combination, a pair of disks and means to rotate said disks at the same speed upon fixed axes at a slight angle to each other to forma yarn retaining groove of varying width therebetween at their peripheries. r

2. A feeding device for textile machines comprising in combination, a pair of disks mounted for rotatiori'upon fixed axes. means to simultaneously rotate said disks, and means to resiliently force said disks toward each other at a'portion of their periphery.

3. A feeding device for textile machines comprising in combination, a pair of disks mounted for rotation upon fixed axes at a slight angle 'to each other, means to rotate one of said disks, means to rotate the second disk from the first disk, and means to resiliently force said disks toward each otherata portion of their periphery.

4. A feeding device for textile machines comprising in combination, a pair of disks mounted for rotation at a slight angle to each other means 1. A feeding device for textile machinescom spring plate 52 the outer portions of which are to rotate one of said disks, means to rotate the second disk from the first disk, means to resiliently force said disks toward each other at a portion of their circumference, and means to limit separation of said disks.

5. A feeding device for textile machines comprising in combination, a pair of disks, means to rotate said disks adjacent each other upon axes at a slight angle to each other, said disks having overlapping portions at their peripheries forming a yarn channel of varying width, and resilient means forcing the peripheries of said disks toward each other at a portion of their circumference, whereby yarn within said channel will be tightly clamped between said disks during a portion of its advancing movement with rotation of the disks.

6. A feeding device for textile machines comprising in combination, a pair of disks mounted on axes at a slight angle to each other, means to rotate said disks at the same speed, a yarn channel formed between said disks at their peripheries, said channel being variable in width in accordance with the angular relation between the disks and means resiliently closing said channel at one portion of their circumference, whereby yarn within said channel will be advanced with rotation of said disks.

7. A feeding device for textile machines comprising in combination, a pair of simultaneously rotating disks mounted upon axes at a slight angle to each other and forming at their peripheries a yarn channel of varying width, said channel at one portion being resiliently closed to clamp said yarn and force said yarn to advance with rotation of said disks.

8. A yarn feeding device for textile machines comprising a pair of discs mounted for rotation together about relatively fixed axes, said discs being so associated that a yarn retaining groove is formed therebetween at their peripheries, and means for causing the sides of said groove to approach each other over an angular portion of each rotation of said discs to impart a resilient gripping action therebetween over such portion.

9. A yarn feeding device as claimed in claim 8 characterized in that the means causing the sides of said groove to approach each other over a portion of each rotation of said discs comprise the mountings of said discs which support the discs on axes which are slightly inclined with respect to each other.

10. A yarn feeding device as claimed in claim 8 characterized in that said discs are mounted to rotate on coaxial axes and that the means causing the sides of said groove to approach each other over a portion of each rotation of said discs comprises pressure applying means engaging the side of one disc adjacent its periphery at a certain angular position thereof with respect to its relation so as to press said disc at said portion towards the other disc.

ARTHUR L. LEWIS. NATHAN F. FRETTER. 

